Joe is 20 years old. His sister is half his age less 7. How old is his sister?
1 answer:
You might be interested in
Answer:
Rational
Step-by-step explanation:
A rational number can be written as a fraction of the form.
and a and b are integers.
Hence in this case a=999 and b=100.
Since both are integers with b being a non-zero integer, we conclude that 9.99 is a rational number.